201222935 六、發明說明： 【發明所屬之技術領域】 本發明係關於電池模組。 【先前技術】 在串聯或並聯連接有複數個扁平薄型電池之電池組， 爲了偵測各扁平薄型電池的電壓是將電池控制器（Cell controller )所連接的連接器插入設在電池模組的插入口 ，（專利文獻1 )。 但是，在以往的電池之構成中，由於是在將扁平型電 池複數層積層後的積層體上安裝屬於其他構件之設有電壓 檢測用連接器的插入口之絕緣蓋，因此零件數變多，而有 製造時耗費許多工時的問題。 先行技術文獻 專利文獻 專利文獻1 :日本特開2006-2 1 03 1 2號公報 【發明內容】 本發明之目的在於提供一種減少零件數並且可插入、 卡止連接器之電池模組。 本發明之電池模組具有：嵌合部，係利用積層複數絕 緣構件所形成，該絕緣構件係用於防止扁平型電池的電極 片（electorde tab )之短路；及第2卡合部，係與外部連 -5- 201222935 接器的第1卡合部卡合。 根據本發明，由於利用積層絕緣構件所形成的嵌合部 來嵌合外部連接器，且藉由形成於絕緣構件的第2卡合部 而卡止外部連接器，因此可減少零件數並且與對方側的外 部連接器連接》 【實施方式】 以下，根據圖式說明本發明之實施形態。 《第1實施形態》 利用第1圖及第2圖說明有關本例之電池模組所包含 的扁平型電池1。第1圖係顯示扁平型電池1之俯視圖， 第2圖係沿著第1圖的A-A線之剖視圖。扁平型電池1 係鋰離子系、平板狀、積層型的層疊型蓄電池（薄型電池 )，且如第1圖及第2圖所示，由3片正極板11、5片隔 板12、3片負極板13、正極片14(正極端子）、負極片 15(負極端子）、上部外裝構件16、下部外裝構件17以 及未特別圖示之電解質所構成。 其中的正極板11、隔板12、負極板13及電解質構成 發電元件18，且正極板11、負極板13構成電極板，上部 外裝構件1 6及下部外裝構件1 7構成一對外裝構件。 構成發電元件18的正極板11具有延伸至正極片14 的正極側集電體11a和正極層lib、11c，該正極層lib、 1 1 c係分別形成在正極側集電體丨1 a局部的兩主面。此外 -6- 201222935 ，正極板11的正極層lib、lie並非形成涵蓋正極側集電 體11a全體的兩主面，而是如第2圖所示’在積層正極板 1 1、隔板1 2及負極板1 3以構成發電元件1 8時，僅在正 極板11實質上與隔板12重疊的部分形成有正極層11b、 lie。又，本例中，正極板11和正極側集電體11a係由一 片導電體形成，但可以個別構成正極板1 1和正極側集電 體Π a後將該等接合。 正極板11的正極側集電體11a，係由例如鋁箔、鋁 合金箔、銅箔或鎳箔等電化學性穩定的金屬箔所構成。又 ，正極板 11的正極層 lib、lie，係將例如鎳酸鋰（ LiNi02)、錳酸鋰（LiMn02)或鈷酸鋰（LiCo02)等鋰 複合氧化物，或混合有硫族（S、Se、Te )化物等正極活 性物質、碳黑等導電劑、聚四氟乙烯的水性分散液等黏著 劑及溶劑者，塗布於正極側集電體1 1 a局部的兩主面，且 藉由乾燥及壓延而形成。 構成發電元件18的負極板13具有延伸至負極片15 的負極側集電體13a和負極層！3b、13c，該負極層13b、 1 3 c係分別形成在該負極側集電體丨3 a局部的兩主面。此 外，負極板13的負極層i3b、13c亦非形成涵蓋負極側集 電體〗3a全體的兩主面，而是如第2圖所示，於積層正極 板1 1、隔板1 2及負極板丨3以構成發電元件1 8時，僅在 負極板13實質上與隔板12重疊的部分形成有負極層13b 、1 3 c。又，本例中，負極板1 3和負極側集電體！ 3 3係由 一片導電體形成’但可以不同體地構成負極板13和負極 201222935 側集電體1 3 a且將該等接合。 負極板1 3的負極側集電體1 3 a，係由例如鎳箱、銅 箔、不鏽鋼箔或鐵箔等電化學性穩定的金屬箔所構成。又 ，負極板13的負極層13b、13c，係在例如非晶質碳、難 石墨化碳、易石墨化碳或石墨等之可吸藏及釋出上述正極 活性物質的鋰離子之負極活性物質中，混合當作有機物燒 成體的前驅體材料之苯乙烯丁二烯橡膠樹脂粉末的水性分 散液，且使其乾燥後予以粉碎’藉此將碳粒子表面載持有 碳化苯乙烯丁二烯橡膠者當作主材料，進一步於該主材料 混合丙烯酸樹脂乳液等黏結劑，將該混合物塗布於負極側 集電體13a局部的兩主面’藉由使其乾燥及壓延而形成。 特別是使用非晶質碳或難石墨化碳當作負極活性物質 時，缺乏充放電時的電位平坦特性而使得輸出電壓也隨著 放電量降低’因此不適合做爲通訊機器或事務機器之電源 ，但由於沒有急遽之輸出降低而有利於當作電動汽車之電 源來使用。 發電元件18的隔板12係用於防止上述正極板11和 負極板13之短路，亦可具備保持電解質之功能。該隔板 12係例如由聚乙烯（PE )或聚丙烯（PP )等聚烯烴等所 構成的微多孔性膜，具有當過電流流過時藉由其發熱而閉 塞層的空孔以遮斷電流之功能。 此外，關於本例之隔板12，並不僅限於聚烯烴等單 層膜，亦可利用聚乙烯膜將聚丙烯膜做夾在中間之三層構 造，或積層聚烯烴微多孔膜和有機不織布等者。 -8 - 201222935 以上發電元件18係正極板11和負極板13夾介隔板 12而交互地積層而成。而且，3片正極板11係夾介正極 側集電體11a且分別連接於金屬箔製的正極片14，此外3 片負極板1 3係夾介負極側集電體1 3 a且同樣地分別連接 於金屬箔製的負極片15。 此外，發電元件18的正極板11、隔板12及負極板 13，並不受上述片數任何限定，例如1片正極板11、3片 隔板12及1片負極板13亦可構成發電元件18，可按照 需要選擇正極板11、隔板12及負極板13的片數而構成 〇 正極片14和負極片15只要是電化學性穩定的金屬材 料則未有特別限定，但做爲正極片1 4，與上述正極側集 電體11a同樣地，可舉出例如厚度大約〇.2mm的鋁箔、 鋁合金箔、銅箔或鎳箔等。又，做爲負極片15，與上述 負極側集電體13a同樣地，可舉出例如厚度大約〇.2mm 的鎳箔、銅箔、不鏽鋼箔或鐵箔等。 前面已敘述過，本例係構成藉由將構成電極板11、 13的集電體Ua、13a之金屬箔本身延長至電極片14、15 ，亦即在一片金屬箔11a、13a的局部形成電極層（正極 層lib、11c或負極層13b、13c)，而將剩餘的端部當作 與電極片之連結構件，且將電極板11、13連接於電極片 14、15，但亦可藉由其他材料或零件，連接構成位於正極 層及負極層間的集電體1 1 a、1 3 a之金屬箔和構成連結構 件之金屬箔。 -9- 201222935 上述發電元件18係收納並密封於上部外裝構件16及 下部外裝構件17。雖未特別圖示，但本例之上部外裝構 件1 6及下部外裝構件1 7任一者皆被設計成從扁平型電池 1的內側朝向外側包含內側層、中間層及外側層三層構造 ，該內側層係由例如聚乙烯、改質聚乙烯、聚丙烯、改質 聚丙烯或離子聚合物等耐電解液性及熱熔接性優異的樹脂 薄膜所構成，該中間層係由例如鋁等金屬箔所構成，該外 側層係由例如聚醯胺系樹脂或聚酯系樹脂等電絕緣性優異 的樹脂薄膜所構成。 因而，上部外裝構件1 6及下部外裝構件1 7任一者皆 由以下樹脂·金屬薄膜層疊材等具有可撓性的材料形成， 該樹脂-金屬薄膜層疊材係例如在鋁箔等金屬箔的一面（ 扁平型電池1的內側面）層疊聚乙烯、改質聚乙烯、聚丙 烯、改質聚丙烯或離子聚合物等之樹脂，在另一面（扁平 型電池1的外側面）層疊聚醯胺系樹脂或聚酯系樹脂。 藉由該等外裝構件16、17包住上述發電元件18、正 極片14的局部及負極片15的局部，且在由該外裝構件 1 6、1 7所形成的內部空間，一面將以有機液體爲溶劑以 過氯酸鋰、四氟硼酸鋰或六氟磷酸鋰等鋰鹽當作溶質之液 體電解質注入，一面抽吸由外裝構件16、17所形成的空 間而形成真空狀態之後，藉由熱加壓將外裝構件1 6、1 7 的外周緣熱熔接而密封。 接著，使用第3圖〜第5圖說明關於本例之電池模組 所包含的與間隔片一體形成之電池40 (以下稱爲「一體 -10- 201222935 型電池40」）。第3圖係顯示端子板30之立體圖，第4 圖係顯示一體型電池40之立體圖。第5圖係第4圖的B 部分放大圖。 一體型電池40具有扁平型電池1、框狀且覆蓋扁平 型電池1周圍之間隔片100(絕緣構件）以及連接器端子 3 1。間隔片1 00係由具絕緣性之樹脂或熱熔黏著劑所形成 ，或由樹脂及熱熔黏著劑之混合物所形成。端子板30具 有連接器端子31及本體部32，且使用於例如當作用於檢 測扁平型電池1的電壓之檢測用端子。連接器端子3 1係 端子板30的一部分，且與端子板30的本體部32 —體形 成。本體部32爲板狀，連接器端子31爲銷形狀。端子板 30係由例如鋁、鋁合金、銅或鎳等導體材料所形成。此 外，連接器端子31不一定是電壓檢測用端子，也可以是 電池模組的輸出入端子亦即高壓端子。 本體部32的局部係連接在電極片15(或電極片I4) ，電極片15的局部和本體部30的局部係連接成重疊狀。 電極片15及本體部30的連接部分係例如利用超音波接合 而連接。藉此，電極片15及連接器端子31係電性連接。 電極片15及連接器端子31係導出在扁平型電池1的 外側。板狀的電極片15之面方向、銷形狀的連接器端子 之長邊方向及本體部30的面方向係呈平行狀’且配置電 極片15及連接器端子31。 間隔片1〇〇係夾持並保持著端子板30及電極片15 ’ 且與電極片15及連接器端子31 —體形成。於一體形成時 -11 - 201222935 ，例如利用嵌入成型，本例係將連接著電極片15和端子 板30的扁平型電池1裝塡於形成框狀之模具，藉由注入 樹脂並使其固化而一體化。藉此，間隔片1 〇 〇和扁平型電 池1被一體形成。 間隔片100的短邊之中央附近設有缺口部101。缺口 部1 0 1爲切開間隔片1 〇〇的中央附近之缺口形狀，從間隔 片100的負極型之端面104，朝向扁平型電池1的內部形 成凹部。而且，連接器端子31係配設在缺口部101，且 在缺口部1 0 1內，朝向外側突出。又，缺口部1 0 1的側面 ，亦即與間隔片100的端面104垂直之面設有導引部105 ，且設在兩垂直面。 又，間隔片1 〇〇設有缺口部103，該缺口部103係位 於與缺口部101相對向之位置，且與具有缺口部101的短 邊爲對邊側（正極側）。缺口部103爲切開間隔片100的 中央附近之缺口形狀，從間隔片100的正極型之端面104 ，朝向扁平型電池1的內部形成凹部。 此外，本例之缺口部103未設置導引部105，但亦可 設置導引部105。且本例係連接器端子31僅設在扁平型 電池1的一方短邊側，但亦可設在兩方短邊側。 接著，使用第6圖說明關於一體型電池41。第6圖 係一體型電池41中相當於第4圖的B部分之放大圖。如 第4圖及第5圖所示，基本構成係與一體型電池40同樣 ’但取代導引部105而設有卡合部102之處爲相異。藉由 設置導引部105，使外部連接器80對嵌合部70之定位較 -12- 201222935 爲容易，且可防止連接器端子31損傷。 如第6圖所示，缺口部1 01的側面，亦即與間隔片 100的端面104垂直之面設有卡合部102，且設在兩垂直 面。卡合部102係形成鉤卡後述外部連接器80的鉤卡部 83之形狀，且在卡合部102，沿著與端面1〇4垂直的垂直 面形成階差。此外，卡合部102和鉤卡部83所構成的卡 合部分之構造於後述。 又，在與具有卡合部102的缺口部101相對向之位置 ，設有與上述同樣的缺口部103。該缺口部103係與上述 缺口部101的卡合部102同樣地，設有卡合部102。此外 ，卡合部102亦可設在缺口部101或缺口部103之其中一 者。 接著，第7圖及第8圖說明關於本例之積層體60。 第7圖係顯示積層體60之立體圖，第8圖係第7圖的C 部分之放大圖。 積層體60係藉由將一體型電池40及一體型電池41 進行複數層積層所形成，從上層，以3層一體型電池40 、1層一體型電池41、4層一體型電池40之順序積層。 複數層一體型電池40之中，以在一個一體型電池40的正 極側之上下面配設其他一體型電池的負極側之方式積層。 同樣地，以在一體型電池41的正極側之上下面配設一體 型電池40的負極側之方式積層。鄰接的複數個一體型電 池40、41的正極片14及負極片15，係藉由具有導電性 的匯流排（無圖示）等而連接’或亦可重疊而直接連接’ -13- 201222935 藉此，將複數個一體型電池40、41串聯連接。此外，一 體型電池40、41之層數可以是任意層數，又不—定要將 一體型電池41設定爲積層體60的中央部分之電池層。且 ，亦可將複數個一體型電池40、41並聯連接。 如第8圖所示，藉由在積層體60的端面側積層一體 型電池40、41而形成嵌合部70。嵌合部70係由經積層 的複數個間隔片100所形成，且藉由缺口部101和缺口部 103交互重疊所形成。且由於缺口部i(H形成有卡合部 102或導引部1〇5，因此多層狀之嵌合部70係於奇數層或 複數層中任一者之層，具有卡合部102及導引部1〇5。 在卡合部70，連接器端子31係從與後述外部連接器 8〇相對向之對向面71突出而形成。且卡合部1〇2及導引 部105係形成在供外部連接器80滑動的滑動面，亦即與 對向面71垂直之面或嵌合部70的側壁面。 接著，使用第9圖及第10圖說明關於嵌合部70和與 該嵌合部70嵌合的外部連接器80。第9圖係顯示積層體 6〇的局部及外部連接器80之立體圖。第10圖係顯示嵌 合部70和外部連接器80嵌合的狀態中之積層體60的局 部之立體圖。 外部連接器80具備從背面導入的配線8 1。配線8 ! 連接於設在外部連接器80內部的端子（無圖示）。又， 外部連接器80係於側面具有導引部82及鉤卡部83 »導 引部82的形狀係對應導引部1〇5的形狀，導引部82及導 引部1〇5係於將外部連接器80嵌合在卡合部70時，具有 -14- 201222935 進行定位之功能。鉤卡部83的形狀爲掛鉤之形狀，且對 應卡合部102的形狀。 接著’使用第11圖及第12圖說明關於卡合部1〇2和 鉤卡部83。第11圖係沿著第9圖的D-D線之局部剖視圖 ’第1 2圖係沿著第1 0圖的E-E線之局部剖視圖。 如第11圖所示’鉤卡部83形成有爪部84，卡合部 1 02形成有溝部1 06。而且’沿第i i圖的箭頭方向（外部 連接器80的插入方向）插入鉤卡部83時，爪部84在卡 合部102的側壁滑動’且如第12圖所示般被卡合於溝部 106。爪部84具有與第11圖的箭頭方向垂直之垂直面， 由於該垂直面係與溝部1 06的側壁抵接，因此限制鉤卡部 83的動作而卡合鉤卡部83及卡合部102。 回到第1 〇圖，由於嵌合部70的形狀係形成沿著外部 連接器80的形狀，因此將外部連接器80插入嵌合部70 時，嵌合部70嵌合外部連接器80。又，卡合部102及鉤 卡部83係藉由將外部連接器80嵌合於嵌合部70而卡合 ，且限制外部連接器80朝外部連接器80的插入方向及與 該插入方向相反方向之動作。 藉此，由於嵌合部70具有與外部連接器80的插入口 亦即與母連接器之殻體同樣的功能’因此在積層的間隔片 100不須形成用以插入母連接器之插入口’亦不需將母連 接器本身當作其他構件。 接著，使用第13圖及第14圖說明關於電池模組200 。第1 3圖係顯示藉由殼體密封之前的電池模組200之立 -15- 201222935 體圖，第14圖係顯示電池模組200之立體圖。電池模組 2〇〇具備覆蓋積層體60的上殼體91及下殼體92。而且， 上殼體91及下殼體92係以將周圍歛縫而密封積層體60 。又，上殼體91及下殻體92係於相當於積層體60的嵌 合部70之位置設有缺口，而成爲外部連接器80的插入口 〇 如上述，本例係藉由積層複數個間隔片1 00而形成， 具有與外部連接器80嵌合的嵌合部70，及與鉤卡部83 卡合的卡合部1〇2。藉此，利用包含嵌合部70及卡合部 102的部分，確實地連接外部連接器80，因此不須另外有 母連接器等或構成外部連接器80的收納口之其他構件， 而能抑制零件數增加。又，本例係以與以往的扁平型電池 1的積層工時相同的工時來形成外部連接器80的插入口 ，由於僅積層一體型電池40、41來形成該插入口，因此 可提供生產性優異的電池模組200。 又，本例係不須將用於插入內部連接器的插入口形成 於間隔片，因此該部分可提高生產效率，而可提供生產性 優異的電池模組2 0 0。又，本例係將卡合部1 0 2設在間隔 片100，因此可提高對於與外部連接器80連接之可靠性 ，且由於能感覺到插入外部連接器80時的卡嗒感，因此 能更加提高作業效率。進一步，本例係藉由具備卡合部 1 02，而能容易地偵知是否與外部連接器8 0確實地卡合。 又，本例係因不需要其他構件亦即內部連接器或內部連接 器用的插入口，因此可小型化，且可有效地活用電池空間 -16- 201222935 又，本例係扁平型電池1和間隔片1 〇〇 —體形成。藉 此，於將外部連接器80插入嵌合部70時，連接器端子 31被施加應力，但由於本例係具有與扁平型電池1 一體 化之間隔片1 00，因此間隔片1 〇〇能吸收該應力，而使對 連接器端子31之負載減輕。又，由於積層扁平型電池1 時，間隔片1〇〇也被一體化且積層，因此可提高積層時的 生產效率。又，藉由扁平型電池1和間隔片100 —體形成 而能提高剛性，因此電極片14、15及連接器端子31對於 來自外部的應力成爲強固之構造，而能提高安全性及品質 可靠性。 又，本例係於扁平型電池1的周圍設置框狀的間隔片 1 00。因此，扁平型電池1的周圍係利用絕緣性構件予以 覆蓋，因此可防止金屬部分露出而短路。 又，本例係藉由嵌入成型而使扁平型電池1和間隔片 100 —體化，並將扁平型電池1的周圍以間隔片100覆蓋 。藉此，於將外部連接器80插入嵌合部70時，連接器端 子3 1被施加應力，但藉由框狀的間隔片1 00能吸收該應 力，而能使對連接器端子31的負載減輕。 又，本例係間隔片100夾持電極片14、15及連接器 端子31，並與電極片14、15及連接器端子31 —體形成 。藉此，於將外部連接器80插入嵌合部70時，電極片 1 4 ' 1 5及連接器端子3 1被施加應力，但能使對電極片i 4 、15及連接器端子31的負載減輕。 -17- 201222935 又，本例係將連接器端子31形成在端子板30，並使 端子板30和電極片14、15連接’且藉由間隔片1〇〇夾持 端子板30及電極片14、15。藉此’能以簡易的構造使電 極片14、15和連接器端子連接，並提高在電池模組200 端子部分之剛性。 又，本例係使電極片14、15的面方向、端子板30的 面方向及連接器端子31的長邊方向’和外部連接器80的 插入方向呈平行。藉此，於外部連接器80插入時’對於 施加於電極片14、15、端子板30及連接器端子31之應 力，可保持剛性，而可實現更安全且可靠性高的電池模組 200 ° 又，本例係藉由超音波接合來連接端子板30及電極 片1 4、1 5 »藉此，可防止電阻增加並可小型化。 又，本例係由熱熔黏著劑、樹脂或熱熔黏著劑及樹脂 之混合物而形成間隔片100。藉此，可使形狀之自由度提 升》且能藉由該混合物適當地用於每個要求強度的部位。 又，本例係將間隔片1 〇〇形成框狀且覆蓋扁平型電池 1的周圍，但如第1 5圖所示，間隔片100僅夾持扁平型 電池1的電極片1 4、1 5之短邊側之形狀亦可。 此外，本例係將連接器端子31當作電極片14、15的 —部分，而利用同一構件形成亦可。藉此，可省略端子板 3 〇而減少零件數。 又，本例係將外部連接器8 0當作公側之連接器，將 包含嵌合部70、連接器端子31及卡合部102的部分當作 -18- 201222935 母連接器，但亦可將外部連接器80當作母側之連接器， 將包含嵌合部70、連接器端子31及卡合部102的部分當 作公連接器。 又，本例係卡合部1 02具有外部連接器80的定位功 能，因此可以不設導引部105。 上述間隔片1 00相當於有關本發明之「絕緣構件」， 上述卡合部102相當於有關本發明之「第2卡合部」，上 述鉤卡部83相當於有關本發明之「第1卡合部」。 【圖式簡單說明】 第1圖係關於發明之實施形態之電池模組所包含的扁 平型電池1之俯視圖。 第2圖係沿著弟1圖A - A線之剖視圖。 第3圖係關於發明之實施形態之電池模組的端子板之 立體圖。 第4圖係關於發明之實施形態之電池模組的一體型電 池之立體圖。 第5圖係第4圖的B部分之放大圖。 第6圖係相當於第4圖的B部分之一體型電池的局部 放大圖。 第7圖係關於發明之實施形態之電池模組的積層體之 立體圖。 第8圖係第7圖的C部分之放大圖。 第9圖係第7圖的積層體的一部分和外部連接器之立 -19 - 201222935 體圖。 第10圖係顯示第9圖的外部連接器嵌合於積層體之 狀態的立體圖。 第1 1圖係沿著第9圖D - D線之局部剖視圖。 第1 2圖係沿著第1 0圖E-E線之局部剖視圖。 第13圖係藉由殼體密封之前的電池模組200之立體 圖。 第1 4圖係藉由殼體密封之後的電池模組200之立體 圖。 第1 5圖係關於發明之實施形態之電池模組的一體型 電池之立體圖。 t $ §元件符號說明】 1 :扁平型電池 U :正極板 1 1 a :正極側集電體 1 lb 、11c： 正 極 層 12 : 隔片 13 ： 負極板 1 3 a :負極側集電體 1 3b 、13c: 負 極 層 U : 正極片 、 電 極片 15 : 負極片 > 電 極片 16: 上部外 裝 構 件 -20- 201222935 1 7 :下部外裝構件 18 :發電要素 3 〇 :端子板 3 1 :連接器端子 32 :本體部 40、41:—體型電池 60 :積層體 7〇 :嵌合部 71 :對向面 8 〇 =外部連接器 8 1 :導線 8 2、1 0 5 :導引部 8 3 :飽卡部 8 4 :爪部 91 :上殼體 92 :下殼體 1 〇 〇 :隔片 1 0 1、1 0 3 :缺口部 102 :卡合部 1 04 :端面 106 :溝部 200 :電池模組201222935 VI. Description of the Invention: [Technical Field of the Invention] The present invention relates to a battery module. [Prior Art] A battery pack in which a plurality of flat thin batteries are connected in series or in parallel, in order to detect the voltage of each flat thin battery, a connector to which a battery controller is connected is inserted into a battery module. Mouth, (Patent Document 1). However, in the conventional battery configuration, since the insulating cover provided with the insertion port of the voltage detecting connector of the other member is attached to the laminated body in which the plurality of flat batteries are laminated, the number of parts is increased. There are problems that require a lot of man-hours to manufacture. CITATION LIST Patent Literature Patent Literature 1: JP-A-2006-2 1 03 1 2 SUMMARY OF THE INVENTION An object of the present invention is to provide a battery module in which the number of parts is reduced and a connector can be inserted and locked. The battery module of the present invention has a fitting portion formed by laminating a plurality of insulating members for preventing short circuit of an electrode piece of a flat type battery; and a second engaging portion The first engaging part of the external -5 - 201222935 connector is engaged. According to the invention, since the external connector is fitted by the fitting portion formed by the laminated insulating member, and the external connector is locked by the second engaging portion formed in the insulating member, the number of parts can be reduced and the other party can be External connector connection on the side [Embodiment] Hereinafter, embodiments of the present invention will be described based on the drawings. [First Embodiment] The flat type battery 1 included in the battery module of this example will be described with reference to Figs. 1 and 2 . Fig. 1 is a plan view showing a flat type battery 1, and Fig. 2 is a cross-sectional view taken along line A-A of Fig. 1. The flat battery 1 is a lithium ion-based, flat-plate, laminated-type laminated battery (thin battery), and as shown in Figs. 1 and 2, three positive electrode plates 11, five separators, and three sheets are used. The negative electrode plate 13, the positive electrode sheet 14 (positive electrode terminal), the negative electrode sheet 15 (negative electrode terminal), the upper exterior member 16, the lower outer member 17, and an electrolyte (not shown) are formed. The positive electrode plate 11, the separator 12, the negative electrode plate 13, and the electrolyte constitute the power generating element 18, and the positive electrode plate 11 and the negative electrode plate 13 constitute an electrode plate, and the upper outer member 16 and the lower outer member 17 constitute an outer member. . The positive electrode plate 11 constituting the power generating element 18 has a positive electrode side current collector 11a and a positive electrode layer lib, 11c extending to the positive electrode sheet 14, and the positive electrode layers lib and 1 1 c are formed on the positive electrode side current collector 丨1 a, respectively. Two main faces. Further, in -6 to 201222935, the positive electrode layers lib and lie of the positive electrode plate 11 are not formed to cover the two main faces of the entire positive electrode side current collector 11a, but are as shown in Fig. 2 'in the laminated positive electrode plate 1 1 and the separator 1 2 When the negative electrode plate 13 constitutes the power generating element 18, the positive electrode layers 11b and lie are formed only in a portion where the positive electrode plate 11 substantially overlaps the separator 12. Further, in the present embodiment, the positive electrode plate 11 and the positive electrode side current collector 11a are formed of a single conductor, but the positive electrode plate 11 and the positive electrode side current collector 个别 a may be separately formed and joined. The positive electrode side current collector 11a of the positive electrode plate 11 is made of, for example, an electrochemically stable metal foil such as an aluminum foil, an aluminum alloy foil, a copper foil or a nickel foil. Further, the positive electrode layers lib and lie of the positive electrode plate 11 are, for example, a lithium composite oxide such as lithium nickelate (LiNiO 2 ), lithium manganate (LiMnO 2 ) or lithium cobaltate (LiCo 2 ), or a mixed chalcogen (S, Se). An adhesive such as a positive electrode active material such as Te) or a conductive agent such as carbon black or an aqueous dispersion of polytetrafluoroethylene, and a solvent are applied to both main surfaces of the positive electrode side current collector 1 1 a and dried by drying. And formed by calendering. The negative electrode plate 13 constituting the power generating element 18 has the negative electrode side current collector 13a and the negative electrode layer which extend to the negative electrode sheet 15! 3b and 13c, the negative electrode layers 13b and 1 3 c are respectively formed on the two main faces of the negative electrode side current collector 丨3 a. Further, the negative electrode layers i3b and 13c of the negative electrode plate 13 are not formed to cover the two main faces of the negative electrode side current collector 3a, but are stacked on the positive electrode plate 1 1 , the separator 1 2 and the negative electrode as shown in Fig. 2 . When the stack 3 constitutes the power generating element 18, the negative electrode layers 13b and 13c are formed only in a portion where the negative electrode plate 13 substantially overlaps the separator 12. Moreover, in this example, the negative electrode plate 13 and the negative electrode side current collector! 3 3 is formed of one piece of conductor 'but the negative electrode plate 13 and the negative electrode 201222935 side current collector 1 3 a may be formed differently and joined. The negative electrode side current collector 13 3 a of the negative electrode plate 13 is made of an electrochemically stable metal foil such as a nickel case, a copper foil, a stainless steel foil or an iron foil. Further, the negative electrode layers 13b and 13c of the negative electrode plate 13 are, for example, amorphous carbon, non-graphitizable carbon, easily graphitizable carbon or graphite, and the like, and a negative electrode active material of lithium ions capable of occluding and releasing the positive electrode active material. An aqueous dispersion of styrene butadiene rubber resin powder as a precursor material of the organic body fired body, which is dried and then pulverized, thereby carrying carbonized styrene butadiene on the surface of the carbon particles. The rubber is used as a main material, and a binder such as an acrylic resin emulsion is further mixed with the main material, and the mixture is applied to the two main faces of the negative electrode side current collector 13a, which are formed by drying and rolling. In particular, when amorphous carbon or non-graphitizable carbon is used as the negative electrode active material, the potential flatness characteristic at the time of charge and discharge is lacking, and the output voltage is also lowered with the discharge amount. Therefore, it is not suitable as a power source for a communication machine or a transaction machine. However, since there is no imminent output reduction, it is advantageous to be used as a power source for an electric vehicle. The separator 12 of the power generating element 18 is for preventing a short circuit between the positive electrode plate 11 and the negative electrode plate 13, and may have a function of holding an electrolyte. The separator 12 is, for example, a microporous film made of a polyolefin such as polyethylene (PE) or polypropylene (PP), and has a pore which occludes a layer by heating when an overcurrent flows to block the current. The function. Further, the separator 12 of the present example is not limited to a single layer film such as polyolefin, and a polyethylene film may be used to sandwich a polypropylene film in a three-layer structure, or a laminated polyolefin microporous film, an organic nonwoven fabric, or the like. By. -8 - 201222935 The above-mentioned power generation element 18 is formed by alternately laminating the positive electrode plate 11 and the negative electrode plate 13 with the separator 12 interposed therebetween. Further, the three positive electrode plates 11 are sandwiched between the positive electrode side current collectors 11a and are respectively connected to the positive electrode sheets 14 made of metal foil, and the three negative electrode plates 13 are sandwiched between the negative electrode side current collectors 1 3 a and similarly respectively. It is connected to the negative electrode sheet 15 made of a metal foil. Further, the positive electrode plate 11, the separator 12, and the negative electrode plate 13 of the power generating element 18 are not limited to the number of the above-mentioned sheets, and for example, one positive electrode plate 11, three separators 12, and one negative electrode plate 13 may constitute a power generating element. 18, the number of the positive electrode plate 11, the separator 12, and the negative electrode plate 13 can be selected as needed, and the positive electrode sheet 14 and the negative electrode sheet 15 are not particularly limited as long as they are electrochemically stable metal materials, but are used as positive electrode sheets. In the same manner as the above-described positive electrode side current collector 11a, for example, an aluminum foil having a thickness of about 0.2 mm, an aluminum alloy foil, a copper foil, a nickel foil, or the like can be given. In the same manner as the negative electrode side current collector 13a, for example, a nickel foil, a copper foil, a stainless steel foil or an iron foil having a thickness of about 0.2 mm can be mentioned. As described above, this example is constructed by extending the metal foil itself of the current collectors Ua, 13a constituting the electrode plates 11, 13 to the electrode sheets 14, 15, that is, forming electrodes on a portion of the metal foils 11a, 13a. a layer (positive layer lib, 11c or negative electrode layers 13b, 13c), and the remaining ends are used as a connecting member with the electrode sheets, and the electrode plates 11, 13 are connected to the electrode sheets 14, 15, but also by Other materials or parts are connected to a metal foil constituting the current collectors 1 1 a and 1 3 a between the positive electrode layer and the negative electrode layer, and a metal foil constituting the connecting member. -9- 201222935 The power generating element 18 is housed and sealed to the upper exterior member 16 and the lower exterior member 17. Although not shown in the drawings, any of the upper outer casing member 16 and the lower outer casing member 17 in this embodiment is designed to include the inner layer, the intermediate layer, and the outer layer from the inner side toward the outer side of the flat battery 1 . The inner layer is composed of a resin film excellent in electrolyte resistance and thermal fusion properties such as polyethylene, modified polyethylene, polypropylene, modified polypropylene or ionic polymer, such as aluminum. The outer layer is made of a resin film having excellent electrical insulating properties such as a polyamide resin or a polyester resin. Therefore, either of the upper exterior member 16 and the lower exterior member 17 is formed of a flexible material such as the following resin/metal thin film laminate, and the resin-metal thin film laminate is, for example, a metal foil such as an aluminum foil. One side (the inner side surface of the flat type battery 1) is laminated with a resin such as polyethylene, modified polyethylene, polypropylene, modified polypropylene or ionic polymer, and laminated on the other side (outer side of the flat type battery 1). An amine resin or a polyester resin. The power generating element 18, the portion of the positive electrode sheet 14, and a portion of the negative electrode sheet 15 are surrounded by the exterior members 16, 17 and are formed in the internal space formed by the exterior members 16 and 17 The organic liquid is a solvent in which a lithium salt such as lithium perchlorate, lithium tetrafluoroborate or lithium hexafluorophosphate is used as a liquid electrolyte of a solute, and a space formed by the exterior members 16 and 17 is suctioned to form a vacuum state, followed by heat. The outer peripheral edges of the exterior members 16 and 17 are thermally welded and sealed by pressurization. Next, a battery 40 (hereinafter referred to as "integrated-10-201222935 type battery 40") integrally formed with the spacer included in the battery module of the present embodiment will be described with reference to Figs. 3 to 5 . 3 is a perspective view showing the terminal block 30, and FIG. 4 is a perspective view showing the integrated battery 40. Fig. 5 is an enlarged view of a portion B of Fig. 4. The integrated battery 40 has a flat battery 1, a frame-like shape, and covers a spacer 100 (insulating member) around the flat battery 1 and a connector terminal 31. The spacer 100 is formed of an insulating resin or a hot-melt adhesive, or a mixture of a resin and a hot-melt adhesive. The terminal block 30 has a connector terminal 31 and a body portion 32, and is used, for example, as a detecting terminal for detecting a voltage of the flat type battery 1. The connector terminal 31 is a part of the terminal block 30 and is formed integrally with the body portion 32 of the terminal block 30. The main body portion 32 has a plate shape, and the connector terminal 31 has a pin shape. The terminal plate 30 is formed of a conductor material such as aluminum, aluminum alloy, copper or nickel. Further, the connector terminal 31 is not necessarily a voltage detecting terminal, and may be a high voltage terminal which is an input/output terminal of the battery module. The portion of the body portion 32 is connected to the electrode sheet 15 (or the electrode sheet I4), and a portion of the electrode sheet 15 and a portion of the body portion 30 are connected to each other in an overlapping manner. The connection portion between the electrode sheet 15 and the body portion 30 is connected by, for example, ultrasonic bonding. Thereby, the electrode sheet 15 and the connector terminal 31 are electrically connected. The electrode sheet 15 and the connector terminal 31 are led out to the outside of the flat type battery 1. The surface direction of the plate-like electrode sheet 15, the longitudinal direction of the pin-shaped connector terminal, and the surface direction of the main body portion 30 are parallel, and the electrode piece 15 and the connector terminal 31 are disposed. The spacer 1 holds and holds the terminal block 30 and the electrode sheet 15' and is formed integrally with the electrode sheet 15 and the connector terminal 31. In the case of integral molding, -11 - 201222935, for example, by insert molding, in this example, the flat type battery 1 to which the electrode sheet 15 and the terminal block 30 are attached is attached to a mold which is formed into a frame shape, and the resin is injected and cured. Integration. Thereby, the spacer 1 〇 and the flat type battery 1 are integrally formed. A notch portion 101 is provided near the center of the short side of the spacer 100. The notch portion 10 1 is a notch shape in the vicinity of the center of the slit sheet 1 切, and a concave portion is formed from the end surface 104 of the negative electrode type of the spacer 100 toward the inside of the flat battery 1 . Further, the connector terminal 31 is disposed in the notch portion 101, and protrudes outward in the notch portion 110. Further, a side surface of the notch portion 110, that is, a surface perpendicular to the end surface 104 of the spacer 100, is provided with a guide portion 105 and is provided on both vertical surfaces. Further, the spacer 1 is provided with a notch portion 103 which is located at a position facing the notch portion 101 and which is opposite to the short side having the notch portion 101 (positive side). The notch portion 103 has a notch shape in the vicinity of the center of the slit sheet 100, and a concave portion is formed from the positive electrode end surface 104 of the spacer 100 toward the inside of the flat battery 1. Further, the notch portion 103 of the present example is not provided with the guide portion 105, but the guide portion 105 may be provided. Further, in this example, the connector terminal 31 is provided only on one short side of the flat type battery 1, but it may be provided on both short sides. Next, the integrated battery 41 will be described using FIG. Fig. 6 is an enlarged view corresponding to a portion B of Fig. 4 in the integrated battery 41. As shown in Figs. 4 and 5, the basic configuration is the same as that of the integrated battery 40. However, the position where the engaging portion 102 is provided instead of the guide portion 105 is different. By providing the guiding portion 105, the positioning of the fitting portion 70 by the external connector 80 is easier than that of -12-201222935, and the connector terminal 31 can be prevented from being damaged. As shown in Fig. 6, the side surface of the notch portion 101, that is, the surface perpendicular to the end surface 104 of the spacer 100 is provided with the engaging portion 102, and is provided on both perpendicular faces. The engaging portion 102 is formed in a shape in which the hook portion 83 of the external connector 80, which will be described later, is hooked, and a step is formed in the engaging portion 102 along a vertical plane perpendicular to the end surface 1〇4. Further, the structure of the engaging portion formed by the engaging portion 102 and the hooking portion 83 will be described later. Further, a notch portion 103 similar to the above is provided at a position facing the notch portion 101 having the engaging portion 102. The notch portion 103 is provided with the engaging portion 102 in the same manner as the engaging portion 102 of the notch portion 101 described above. Further, the engaging portion 102 may be provided in one of the notch portion 101 or the notch portion 103. Next, Fig. 7 and Fig. 8 illustrate the laminated body 60 of this example. Fig. 7 is a perspective view showing the laminated body 60, and Fig. 8 is an enlarged view of a portion C of Fig. 7. The laminated body 60 is formed by stacking the integrated battery 40 and the integrated battery 41 in multiple layers, and stacks the three layers of the integrated battery 40, the one-layer integrated battery 41, and the four-layer integrated battery 40 from the upper layer. . Among the plurality of integrated battery units 40, a laminate is formed so as to be disposed on the lower side of the positive electrode side of the one-piece battery 40 on the lower surface side of the other integrated battery. Similarly, a layer is laminated so that the negative electrode side of the integrated battery 40 is disposed on the lower surface of the positive electrode side of the integrated battery 41. The positive electrode sheets 14 and the negative electrode sheets 15 of the plurality of integrated battery cells 40 and 41 are connected by a conductive bus bar (not shown) or the like, or may be directly connected by overlapping. - 13 - 201222935 Thus, a plurality of integrated batteries 40, 41 are connected in series. Further, the number of layers of the unitary batteries 40, 41 may be any number of layers, and it is not necessary to set the integrated battery 41 as the battery layer of the central portion of the laminated body 60. Further, a plurality of integrated batteries 40, 41 may be connected in parallel. As shown in Fig. 8, the fitting portion 70 is formed by laminating the integrated batteries 40, 41 on the end face side of the laminated body 60. The fitting portion 70 is formed by a plurality of laminated spacers 100, and is formed by overlapping the notched portions 101 and the notched portions 103. Further, since the notch portion i (H is formed with the engaging portion 102 or the guiding portion 1〇5, the multi-layered fitting portion 70 is attached to any one of the odd layer or the plurality of layers, and has the engaging portion 102 and The guide portion 1〇5. The connector terminal 31 is formed to protrude from the opposing surface 71 facing the external connector 8A, which will be described later, and the engaging portion 1〇2 and the guiding portion 105 are formed. A sliding surface that is slidable by the external connector 80, that is, a surface perpendicular to the opposing surface 71 or a side wall surface of the fitting portion 70. Next, the fitting portion 70 and the same will be described with reference to FIGS. 9 and 10 The external connector 80 to which the fitting portion 70 is fitted. Fig. 9 is a perspective view showing a portion of the laminated body 6A and the external connector 80. Fig. 10 shows a state in which the fitting portion 70 and the external connector 80 are fitted. A perspective view of a part of the laminated body 60. The external connector 80 includes a wiring 8 1 that is introduced from the back surface. The wiring 8 is connected to a terminal (not shown) provided inside the external connector 80. Further, the external connector 80 is attached to The shape of the guide portion 82 and the hook portion 83 » the guide portion 82 on the side surface corresponds to the shape of the guide portion 1〇5, the guide portion 82 and the guide The portion 1〇5 has a function of positioning from 14 to 201222935 when the external connector 80 is fitted to the engaging portion 70. The hook portion 83 has a shape of a hook and corresponds to the shape of the engaging portion 102. Next, the engaging portion 1〇2 and the hooking portion 83 will be described with reference to Fig. 11 and Fig. 12. Fig. 11 is a partial cross-sectional view along the DD line of Fig. 9 'Fig. 1 2 along the first 0 A partial cross-sectional view of the EE line of the drawing. As shown in Fig. 11, the hook portion 83 is formed with a claw portion 84, and the engaging portion 102 is formed with a groove portion 106. And 'in the direction of the arrow in the ii diagram (the external connector 80) When the hook portion 83 is inserted, the claw portion 84 slides on the side wall of the engaging portion 102 and is engaged with the groove portion 106 as shown in Fig. 12. The claw portion 84 has a direction perpendicular to the arrow direction of Fig. 11. In the vertical plane, since the vertical surface abuts against the side wall of the groove portion 106, the operation of the hook portion 83 is restricted to engage the hook portion 83 and the engaging portion 102. Returning to the first drawing, the fitting portion The shape of 70 is formed along the shape of the external connector 80, so when the external connector 80 is inserted into the fitting portion 70, the fitting portion 70 is fitted to the outside. The engaging portion 80 and the hooking portion 83 are engaged by fitting the external connector 80 to the fitting portion 70, and restricting the insertion direction of the external connector 80 toward the external connector 80 and The insertion direction is reversed. Thereby, since the fitting portion 70 has the same function as the insertion opening of the external connector 80, that is, the housing of the female connector, the spacer sheet 100 is not required to be formed. It is also unnecessary to insert the female connector itself as another member into the insertion port of the female connector. Next, the battery module 200 will be described using Figs. 13 and 14. Fig. 13 shows a perspective view of the battery module 200 before sealing by the casing -15-201222935, and Fig. 14 shows a perspective view of the battery module 200. The battery module 2A includes an upper casing 91 and a lower casing 92 that cover the laminated body 60. Further, the upper casing 91 and the lower casing 92 seal the laminated body 60 by caulking the surroundings. Further, the upper case 91 and the lower case 92 are provided with a notch at a position corresponding to the fitting portion 70 of the laminated body 60, and the insertion port of the external connector 80 is as described above. In this example, a plurality of layers are laminated. The spacer 100 is formed, and has a fitting portion 70 that is fitted to the external connector 80 and an engaging portion 1〇2 that engages with the hook portion 83. With this configuration, the external connector 80 is reliably connected by the portion including the fitting portion 70 and the engaging portion 102. Therefore, it is not necessary to have a female connector or the like, or other members constituting the housing opening of the external connector 80, thereby suppressing The number of parts has increased. Moreover, in this example, the insertion port of the external connector 80 is formed by the same man-hours as the laminating work of the conventional flat type battery 1, and the insertion port is formed by merely laminating the integrated batteries 40 and 41, so that production can be provided. Excellent battery module 200. Further, in this embodiment, it is not necessary to form the insertion opening for inserting the internal connector to the spacer, so that the portion can improve the production efficiency, and the battery module 200 which is excellent in productivity can be provided. Moreover, in this example, since the engaging portion 102 is provided in the spacer 100, the reliability of connection to the external connector 80 can be improved, and since the click feeling when the external connector 80 is inserted can be felt, Improve work efficiency. Further, in this example, by providing the engaging portion 102, it is possible to easily detect whether or not the external connector 80 is surely engaged. Moreover, in this example, since the insertion port for the internal connector or the internal connector is not required, the size can be reduced, and the battery space can be effectively utilized. -16-201222935 In addition, this example is a flat type battery 1 and an interval. Sheet 1 〇〇 body formation. Thereby, when the external connector 80 is inserted into the fitting portion 70, the connector terminal 31 is stressed. However, since this embodiment has the spacer 100 integrated with the flat type battery 1, the spacer 1 can be used. This stress is absorbed to reduce the load on the connector terminal 31. Further, when the flat battery 1 is laminated, the spacers 1 are integrated and laminated, so that the production efficiency at the time of lamination can be improved. Further, since the flat battery 1 and the spacer 100 are integrally formed to increase the rigidity, the electrode sheets 14 and 15 and the connector terminal 31 have a strong structure against external stress, and the safety and quality reliability can be improved. . Moreover, in this example, a frame-shaped spacer 100 is provided around the flat battery 1. Therefore, since the periphery of the flat battery 1 is covered with an insulating member, it is possible to prevent the metal portion from being exposed and short-circuited. Further, in this example, the flat type battery 1 and the spacer 100 are formed by insert molding, and the periphery of the flat type battery 1 is covered with the spacer 100. Thereby, when the external connector 80 is inserted into the fitting portion 70, the connector terminal 31 is stressed, but the stress can be absorbed by the frame-shaped spacer 100, and the load on the connector terminal 31 can be made. Reduced. Further, in this example, the spacer 100 holds the electrode sheets 14, 15 and the connector terminal 31, and is formed integrally with the electrode sheets 14, 15 and the connector terminal 31. Thereby, when the external connector 80 is inserted into the fitting portion 70, the electrode tabs 14' to 15 and the connector terminal 31 are stressed, but the load on the electrode tabs i 4 and 15 and the connector terminal 31 can be applied. Reduced. -17- 201222935 Further, in this example, the connector terminal 31 is formed in the terminal block 30, and the terminal block 30 and the electrode sheets 14, 15 are connected', and the terminal block 30 and the electrode sheet 14 are sandwiched by the spacer 1 15, 15. Thereby, the electrode sheets 14, 15 and the connector terminals can be connected in a simple structure, and the rigidity in the terminal portion of the battery module 200 can be improved. Further, in this example, the surface directions of the electrode sheets 14, 15 and the surface direction of the terminal block 30 and the longitudinal direction of the connector terminal 31 are parallel to the insertion direction of the external connector 80. Thereby, when the external connector 80 is inserted, the stress applied to the electrode sheets 14, 15, the terminal block 30, and the connector terminal 31 can be kept rigid, and a safer and more reliable battery module can be realized. Further, in this example, the terminal plate 30 and the electrode sheets 14 and 15 are connected by ultrasonic bonding, whereby the increase in resistance and the miniaturization can be prevented. Further, in this embodiment, the spacer 100 is formed of a hot melt adhesive, a resin or a mixture of a hot melt adhesive and a resin. Thereby, the degree of freedom of the shape can be increased and can be suitably used for each desired strength portion by the mixture. Further, in this example, the spacer 1 is formed in a frame shape and covers the periphery of the flat type battery 1, but as shown in Fig. 15, the spacer 100 holds only the electrode sheets 14 and 15 of the flat type battery 1. The shape of the short side can also be. Further, in this example, the connector terminal 31 is used as a part of the electrode sheets 14, 15, and may be formed by the same member. Thereby, the terminal block 3 省略 can be omitted and the number of parts can be reduced. Moreover, in this example, the external connector 80 is regarded as a connector on the male side, and the portion including the fitting portion 70, the connector terminal 31, and the engaging portion 102 is regarded as a female connector of -18-201222935, but The external connector 80 is used as a connector on the female side, and a portion including the fitting portion 70, the connector terminal 31, and the engaging portion 102 is regarded as a male connector. Further, in this embodiment, the engaging portion 102 has the positioning function of the external connector 80, so that the guiding portion 105 may not be provided. The spacer 100 corresponds to the "insulating member" of the present invention, the engaging portion 102 corresponds to the "second engaging portion" of the present invention, and the hook portion 83 corresponds to the "first card" of the present invention. Joint department." BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a plan view showing a flat battery 1 included in a battery module according to an embodiment of the invention. Figure 2 is a cross-sectional view taken along line A-A of Figure 1. Fig. 3 is a perspective view showing a terminal block of a battery module according to an embodiment of the invention. Fig. 4 is a perspective view showing an integrated battery of a battery module according to an embodiment of the invention. Fig. 5 is an enlarged view of a portion B of Fig. 4. Fig. 6 is a partially enlarged view of a body type battery corresponding to a portion B of Fig. 4. Fig. 7 is a perspective view showing a laminated body of a battery module according to an embodiment of the invention. Fig. 8 is an enlarged view of a portion C of Fig. 7. Figure 9 is a diagram of a portion of the laminate of Figure 7 and the external connector -19 - 201222935 Figure. Fig. 10 is a perspective view showing a state in which the external connector of Fig. 9 is fitted to the laminated body. Fig. 1 is a partial cross-sectional view taken along line D-D of Fig. 9. Figure 12 is a partial cross-sectional view taken along line E-E of Figure 10. Figure 13 is a perspective view of the battery module 200 before being sealed by the housing. Fig. 14 is a perspective view of the battery module 200 after being sealed by the casing. Fig. 15 is a perspective view showing an integrated battery of a battery module according to an embodiment of the invention. t $ § Description of component symbols] 1 : Flat type battery U: Positive electrode plate 1 1 a : Positive electrode side current collector 1 lb , 11c: Positive electrode layer 12 : Spacer 13 : Negative electrode plate 1 3 a : Negative electrode side current collector 1 3b, 13c: Negative electrode layer U: Positive electrode sheet, Electrode sheet 15: Negative electrode sheet> Electrode sheet 16: Upper outer member -20-201222935 1 7: Lower outer member 18: Power generating element 3 〇: Terminal plate 3 1 : Connector terminal 32: body portion 40, 41: body battery 60: laminated body 7: fitting portion 71: opposite surface 8 〇 = external connector 8 1 : wire 8 2, 1 0 5 : guide portion 8 3: the full-card portion 8 4 : the claw portion 91 : the upper casing 92 : the lower casing 1 〇〇 : the spacer 1 0 1 , 1 0 3 : the notch portion 102 : the engaging portion 1 04 : the end surface 106 : the groove portion 200 : Battery module